B.Com

A candidate with B.Com can submit an application to various jobs under the UPSC, SSC, IFS, Banks, Postal service, Railways, Defense, and State PCS, etc.
Central Government Jobs after B.Com:
Most of the Central government job vacancies are filled by the UPSC examinations. The UPSCs highest grade of examinations which a B.com graduate can appear is the IAS, IFS, IPS and other central government services. The SSC also hold different tests as to fill the vacancies in different government organizations like Accounts assistant, Tax assistant, Grade III Exam, Combined Metric Level and Combined Graduate Level Exam, etc.
Public Sector Banking Jobs after B.Com:
Some of the openings available to a B.Com graduate in a Bank are Clerical to Probationary officer posts. Most of these banks carry out an entrance test in order to employ qualified candidates. There will also be another round of interview in the recruitment process. As to apply for the PO jobs, candidates need to have more than 60% of marks.
Jobs in Indian Railways after B.Com:
Railway Recruitment Board carries out different examinations for employing qualified candidates to the RRB, for which a B.Com graduate can apply for. The railway offer very good career opportunities to graduates. A B.Com graduate can join in the railway as Assistant Accounts Officers and climb the ladder through department exams and grade promotion to Divisional Accounts Officers, Senior Divisional Accounts Officers till Chief Accounts Officer.
Jobs in Indian Defense after B.Com:
A graduate can enter in to the service at the entry level as an Assistant Controller of Defense Accounts.

Talking about career and job prospects in India after B.Com (Hons), it isn't having much of opportunities as there is so much of competition out there. So yes, it can be said that B.Com (Hons) is not enough for good career building. The exception is that you studied from SRCC or Hansraj that can get you placed with a package of 10 LPA or so.
Hence, it is advisable to go for post graduation or some professional qualification in order to build a career.
Talking about the job prospects abroad, it carries hardly any opportunities out there.
See, I agree that skills do matter but in order to show skills, it is essential to get a job or get an interview call which isn't easy with B.Com (Hons) degree nowadays as there are so many others with BBA and Master's degrees. And yes, companies prefer management graduates over normal graduates.